diff --git a/src/buildExec.test.ts b/src/buildExec.test.ts
index 340ced6ea..20990daf6 100644
--- a/src/buildExec.test.ts
+++ b/src/buildExec.test.ts
@@ -122,3 +122,78 @@ test('all arguments', () => {
     delete process.env['INPUT_' + env.toUpperCase()];
   }
 });
+
+describe('trim arguments after splitting them', () => {
+  const baseExpectation = [
+    '-n',
+    expect.stringContaining(''),
+    '-Q',
+    expect.stringContaining('github-action'),
+  ];
+
+  test('files', () => {
+    const envs = { 'files': './client-coverage.txt, ./lcov.info' };
+
+    for (const [name, value] of Object.entries(envs)) {
+      process.env['INPUT_' + name.toUpperCase()] = value;
+    }
+
+    const {execArgs} = buildExec();
+
+    expect(execArgs).toEqual([
+      ...baseExpectation,
+      '-f',
+      './client-coverage.txt',
+      '-f',
+      './lcov.info',
+    ]);
+
+    for (const env of Object.keys(envs)) {
+      delete process.env['INPUT_' + env.toUpperCase()];
+    }
+  });
+
+  test('flags', () => {
+    const envs = { 'flags': 'ios, mobile' };
+
+    for (const [name, value] of Object.entries(envs)) {
+      process.env['INPUT_' + name.toUpperCase()] = value;
+    }
+
+    const {execArgs} = buildExec();
+
+    expect(execArgs).toEqual([
+      ...baseExpectation,
+      '-F',
+      'ios',
+      '-F',
+      'mobile',
+    ]);
+
+    for (const env of Object.keys(envs)) {
+      delete process.env['INPUT_' + env.toUpperCase()];
+    }
+  });
+
+  test('functionalities', () => {
+    const envs = { 'functionalities': 'network, gcov' };
+
+    for (const [name, value] of Object.entries(envs)) {
+      process.env['INPUT_' + name.toUpperCase()] = value;
+    }
+
+    const {execArgs} = buildExec();
+
+    expect(execArgs).toEqual([
+      ...baseExpectation,
+      '-X',
+      'network',
+      '-X',
+      'gcov',
+    ]);
+
+    for (const env of Object.keys(envs)) {
+      delete process.env['INPUT_' + env.toUpperCase()];
+    }
+  });
+});